Revert of Delete base/prefs and update callers to use components.

components/content_settings/core/browser/content_settings_policy_provider.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/content_settings/core/browser/content_settings_policy_provider.h"
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/macros.h"
+#include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "components/content_settings/core/browser/content_settings_rule.h"
 #include "components/content_settings/core/browser/content_settings_utils.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/content_settings/core/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
-#include "components/prefs/pref_service.h"
 
 namespace {
 
 struct PrefsForManagedContentSettingsMapEntry {
   const char* pref_name;
   ContentSettingsType content_type;
   ContentSetting setting;
 };
 
 const PrefsForManagedContentSettingsMapEntry
@@ skipping 384 matching lines @@
     ReadManagedDefaultSettings();
   }
 
   NotifyObservers(ContentSettingsPattern(),
                   ContentSettingsPattern(),
                   CONTENT_SETTINGS_TYPE_DEFAULT,
                   std::string());
 }
 
 }  // namespace content_settings